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Side by Side Diff: mojo/public/cpp/bindings/associated_interface_ptr.h

Issue 2047633002: Revert of Remove base/move.h (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 6 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_ 5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_
6 #define MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_ 6 #define MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_
7 7
8 #include <stdint.h> 8 #include <stdint.h>
9 #include <utility> 9 #include <utility>
10 10
11 #include "base/logging.h" 11 #include "base/logging.h"
12 #include "base/macros.h" 12 #include "base/macros.h"
13 #include "base/memory/ref_counted.h" 13 #include "base/memory/ref_counted.h"
14 #include "base/single_thread_task_runner.h" 14 #include "base/single_thread_task_runner.h"
15 #include "base/threading/thread_task_runner_handle.h" 15 #include "base/threading/thread_task_runner_handle.h"
16 #include "mojo/public/cpp/bindings/associated_group.h" 16 #include "mojo/public/cpp/bindings/associated_group.h"
17 #include "mojo/public/cpp/bindings/associated_interface_ptr_info.h" 17 #include "mojo/public/cpp/bindings/associated_interface_ptr_info.h"
18 #include "mojo/public/cpp/bindings/associated_interface_request.h" 18 #include "mojo/public/cpp/bindings/associated_interface_request.h"
19 #include "mojo/public/cpp/bindings/callback.h" 19 #include "mojo/public/cpp/bindings/callback.h"
20 #include "mojo/public/cpp/bindings/lib/associated_interface_ptr_state.h" 20 #include "mojo/public/cpp/bindings/lib/associated_interface_ptr_state.h"
21 21
22 namespace mojo { 22 namespace mojo {
23 23
24 // Represents the client side of an associated interface. It is similar to 24 // Represents the client side of an associated interface. It is similar to
25 // InterfacePtr, except that it doesn't own a message pipe handle. 25 // InterfacePtr, except that it doesn't own a message pipe handle.
26 template <typename Interface> 26 template <typename Interface>
27 class AssociatedInterfacePtr { 27 class AssociatedInterfacePtr {
28 DISALLOW_COPY_AND_ASSIGN_WITH_MOVE_FOR_BIND(AssociatedInterfacePtr)
29
28 public: 30 public:
29 // Constructs an unbound AssociatedInterfacePtr. 31 // Constructs an unbound AssociatedInterfacePtr.
30 AssociatedInterfacePtr() {} 32 AssociatedInterfacePtr() {}
31 AssociatedInterfacePtr(decltype(nullptr)) {} 33 AssociatedInterfacePtr(decltype(nullptr)) {}
32 34
33 AssociatedInterfacePtr(AssociatedInterfacePtr&& other) { 35 AssociatedInterfacePtr(AssociatedInterfacePtr&& other) {
34 internal_state_.Swap(&other.internal_state_); 36 internal_state_.Swap(&other.internal_state_);
35 } 37 }
36 38
37 AssociatedInterfacePtr& operator=(AssociatedInterfacePtr&& other) { 39 AssociatedInterfacePtr& operator=(AssociatedInterfacePtr&& other) {
(...skipping 110 matching lines...) Expand 10 before | Expand all | Expand 10 after
148 } 150 }
149 151
150 // DO NOT USE. Exposed only for internal use and for testing. 152 // DO NOT USE. Exposed only for internal use and for testing.
151 internal::AssociatedInterfacePtrState<Interface>* internal_state() { 153 internal::AssociatedInterfacePtrState<Interface>* internal_state() {
152 return &internal_state_; 154 return &internal_state_;
153 } 155 }
154 156
155 // Allow AssociatedInterfacePtr<> to be used in boolean expressions, but not 157 // Allow AssociatedInterfacePtr<> to be used in boolean expressions, but not
156 // implicitly convertible to a real bool (which is dangerous). 158 // implicitly convertible to a real bool (which is dangerous).
157 private: 159 private:
158 // TODO(dcheng): Use an explicit conversion operator.
159 typedef internal::AssociatedInterfacePtrState<Interface> 160 typedef internal::AssociatedInterfacePtrState<Interface>
160 AssociatedInterfacePtr::*Testable; 161 AssociatedInterfacePtr::*Testable;
161 162
162 public: 163 public:
163 operator Testable() const { 164 operator Testable() const {
164 return internal_state_.is_bound() ? &AssociatedInterfacePtr::internal_state_ 165 return internal_state_.is_bound() ? &AssociatedInterfacePtr::internal_state_
165 : nullptr; 166 : nullptr;
166 } 167 }
167 168
168 private: 169 private:
169 // Forbid the == and != operators explicitly, otherwise AssociatedInterfacePtr 170 // Forbid the == and != operators explicitly, otherwise AssociatedInterfacePtr
170 // will be converted to Testable to do == or != comparison. 171 // will be converted to Testable to do == or != comparison.
171 template <typename T> 172 template <typename T>
172 bool operator==(const AssociatedInterfacePtr<T>& other) const = delete; 173 bool operator==(const AssociatedInterfacePtr<T>& other) const = delete;
173 template <typename T> 174 template <typename T>
174 bool operator!=(const AssociatedInterfacePtr<T>& other) const = delete; 175 bool operator!=(const AssociatedInterfacePtr<T>& other) const = delete;
175 176
176 typedef internal::AssociatedInterfacePtrState<Interface> State; 177 typedef internal::AssociatedInterfacePtrState<Interface> State;
177 mutable State internal_state_; 178 mutable State internal_state_;
178
179 DISALLOW_COPY_AND_ASSIGN(AssociatedInterfacePtr);
180 }; 179 };
181 180
182 // Creates an associated interface. The output |ptr| should be used locally 181 // Creates an associated interface. The output |ptr| should be used locally
183 // while the returned request should be passed through the message pipe endpoint 182 // while the returned request should be passed through the message pipe endpoint
184 // referred to by |associated_group| to setup the corresponding asssociated 183 // referred to by |associated_group| to setup the corresponding asssociated
185 // interface implementation at the remote side. 184 // interface implementation at the remote side.
186 // 185 //
187 // NOTE: |ptr| should NOT be used to make calls before the request is sent. 186 // NOTE: |ptr| should NOT be used to make calls before the request is sent.
188 // Violating that will cause the message pipe to be closed. On the other hand, 187 // Violating that will cause the message pipe to be closed. On the other hand,
189 // as soon as the request is sent, |ptr| is usable. There is no need to wait 188 // as soon as the request is sent, |ptr| is usable. There is no need to wait
190 // until the request is bound to an implementation at the remote side. 189 // until the request is bound to an implementation at the remote side.
191 template <typename Interface> 190 template <typename Interface>
192 AssociatedInterfaceRequest<Interface> GetProxy( 191 AssociatedInterfaceRequest<Interface> GetProxy(
193 AssociatedInterfacePtr<Interface>* ptr, 192 AssociatedInterfacePtr<Interface>* ptr,
194 AssociatedGroup* group, 193 AssociatedGroup* group,
195 scoped_refptr<base::SingleThreadTaskRunner> runner = 194 scoped_refptr<base::SingleThreadTaskRunner> runner =
196 base::ThreadTaskRunnerHandle::Get()) { 195 base::ThreadTaskRunnerHandle::Get()) {
197 AssociatedInterfaceRequest<Interface> request; 196 AssociatedInterfaceRequest<Interface> request;
198 AssociatedInterfacePtrInfo<Interface> ptr_info; 197 AssociatedInterfacePtrInfo<Interface> ptr_info;
199 group->CreateAssociatedInterface(AssociatedGroup::WILL_PASS_REQUEST, 198 group->CreateAssociatedInterface(AssociatedGroup::WILL_PASS_REQUEST,
200 &ptr_info, &request); 199 &ptr_info, &request);
201 200
202 ptr->Bind(std::move(ptr_info), std::move(runner)); 201 ptr->Bind(std::move(ptr_info), std::move(runner));
203 return request; 202 return request;
204 } 203 }
205 204
206 } // namespace mojo 205 } // namespace mojo
207 206
208 #endif // MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_ 207 #endif // MOJO_PUBLIC_CPP_BINDINGS_ASSOCIATED_INTERFACE_PTR_H_
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